Tseng Chun-hsin

Tseng Chun-hsin
曾俊欣
Country (sports)Taiwan
ResidenceTaipei, Taiwan
Born (2001-08-08) 8 August 2001
Taipei, Taiwan
Height1.75 m (5 ft 9 in)
Turned pro2019
PlaysRight-handed (two-handed backhand)
CoachBenjamin Ebrahimzadeh
Prize moneyUS$ 1,287,298
Singles
Career record15–30
Career titles0
Highest rankingNo. 83 (8 August 2022)
Current rankingNo. 96 (16 June 2025)
Grand Slam singles results
Australian Open1R (2022, 2023)
French Open1R (2022)
Wimbledon1R (2022)
US Open1R (2022)
Doubles
Career record3–2
Career titles0
Highest rankingNo. 305 (8 August 2022)
Last updated on: 16 June 2025.
Tseng Chun-hsin
Traditional Chinese曾俊欣
Simplified Chinese曾俊欣
Transcriptions
Standard Mandarin
Hanyu PinyinZēng Jùnxīn
Tseng Chun-hsin
Medal record
Men's Tennis
Representing  Chinese Taipei
Summer Universiade
2019 NaplesMen's singles
2019 NaplesMen's Team

Tseng Chun-hsin (Chinese: 曾俊欣; pinyin: Zēng Jùnxīn; born 8 August 2001), also known as Jason Tseng, is a Taiwanese tennis player. He has a career-high singles ranking of world No. 83 by the ATP, achieved on 8 August 2022. Tseng is currently the No. 1 Taiwanese player.

He was also the ITF junior No. 1, first reaching this ranking on 11 June 2018 after winning the French Open Boys' Singles. He is also part of the Chinese Taipei Davis Cup team since 2018, with a W/L record of 1–0.